We read Escape from Fear, a National Parks Mysteries novel, with our niece Rachel when we were down in the Virgin Islands. The story is set there, so it was really fun to read. The characters in this series are a family where the mother is a veterinarian who consults with the national parks and her husband and two children. In this story she's been called to the National Park of the Virgin Islands where they are having turtle trouble.
The novels always give a lot of information about the park in addition to having an engaging storyline. They usually require a little suspension of disbelief, and this one was no exception, but once you get past that, the suspense is high and are excellent reading. I definitely recommend them as a family read-aloud, everyone is sure to enjoy the story.
I've written a couple of reviews for other books in the National Parks Mysteries series, one here and one here.